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Agnihotri P, Telfer M, Butt Z, Jella A, Cella D, Kozma CM, Ahuja M, Riaz S, Akamah J.Agnihotri P, et al. Among authors: cella d.J Am Geriatr Soc. 2007 Oct;55(10):1557-65. doi: 10.1111/j.1532-5415.2007.01357.x. Epub 2007 Aug 14.J Am Geriatr Soc. 2007.PMID: 17697104Clinical Trial.